I just bought an asus rog 2070 for my son and cannot plug it into any PCIE. Nor my pc and the kids pc. The right side, where the lock is, it connects well, but the left side doesent. Tried 4 slots, 2 on my pc and 2 on the childs, without any success. Also tried taking off the motherboard, and lift up the fixing screws. But the result the same. Do you guys have any idea?